[SCOTI]

The air chisel is basically a fast repetitive air hammer that uses different tips for different functions. Use a sharp, angled, 'chisel' tip to knock off the rivets head & then swap out to a 'punch' tip to finish poking the remainder of the rivet carcass through the hole.

An alternative method to speed the chiseling off of the rivet heads is to first cut them in a criss-cross pattern down to the frame material w/a cut-off wheel. It makes quick work of knocking them off the rest of the way.